Is Houjicha truly lower caffeine than other teas? I've seen this several places, including one thread here, but I haven't seen this substantiated except in a single study with a single brand of Houjicha. And if so, do we know how much lower?
Also, I'm looking at Den's organic Houjicha. Any experiences here with it? Are there other organic Houjichas anyone would recommend?
My wife wants to stick to organic while pregnant...